ISL95835IRZ-T

Special Purpose Regulators Overview

The ISL95835IRZ-T is a switching controller from Renesas Electronics, part of the Robust Ripple Regulator (R3) series. It complies with Intel IMVP-7 and VR12 standards for industrial multi-phase voltage regulation. The device integrates two voltage regulators with three gate drivers, supporting flexible phase configurations including 1+1 or 3+1 setups. It operates within a supply voltage range of 4.5V to 25V and delivers output voltages between 0.25V and 1.52V. Designed for high-performance computing, it features DCR current sensing, remote voltage sensing, and programmable protection limits.

Special Purpose Regulators Feature Summary

• Implements Robust Ripple Regulator (R3) technology for fast transient response and variable switching frequency
• Integrates dual voltage regulators with shared serial control bus for CPU communication
• Supports lossless inductor DCR current sensing with NTC temperature compensation
• Provides programmable maximum current and thermal limits via external resistors

Special Purpose Regulators Applications

• Industrial multi-phase power supplies for microprocessors
• Graphics processor core power delivery systems
• High-density server and workstation voltage regulation modules

Special Purpose Regulators Procurement Notes

Verify component authenticity through authorized channels due to discontinuation status. Confirm package integrity and moisture sensitivity level handling procedures during storage and assembly. Cross-reference datasheet revisions to ensure compatibility with existing design specifications and compliance requirements.

Special Purpose Regulators Selection Notes

Evaluate phase configuration flexibility against system power density requirements. Assess thermal management needs given the integrated gate drivers and operating temperature range. Compare DCR sensing accuracy benefits against alternative resistor-based current detection methods for cost and performance optimization.

Special Purpose Regulators Part Context

This component belongs to the ISL9583x family designed for Intel IMVP-7 and VR12 architectures. It serves as a complete solution for multiphase DC/DC conversion, replacing discrete controller and driver combinations. The R3 modulation technique distinguishes it from traditional PWM controllers by optimizing efficiency across varying load conditions.

Special Purpose Regulators Replacement Considerations

Check for direct pin-compatible alternatives within the Renesas portfolio that maintain IMVP-7/VR12 compliance. Verify if updated generations offer improved thermal performance or extended availability while retaining functional equivalence.